Info
Trimma yoshinoi: by KORECHIKA YANO, JAPAN
The new species Trimma yoshinoi is described from five specimens, 18.4–21.4 mm SL, collected in 36 m depth at Iriomote-jima Island, Ryukyu Islands, Japan.
Trimma is an Indo-Pacific gobiid fish genus, comprising cryptic, tiny (seldom exceeding 30 mm SL), colorful,
tropical species found on coral and rocky reefs, usually at depths shallower than 50 m (Winterbottom & Hoese
2015). According to Winterbottom (2011), Trimma can be recognized by having the following combination of
characters: lack of cephalic sensory canal pores; much reduced cephalic sensory papillae pattern; wide gill opening
extending to below the vertical limb of the preopercle or anterior to this; lack of bony spicules on the outer gill
rakers of the first gill arch; fewer than 12 dorsal and anal-fin segmented rays; and a fifth pelvic fin ray that is equal
to or more than 40% the length of the fourth pelvic-fin ray.
Systematik: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Trimma yoshinoi, a new gobiid fish from Japan (Perciformes: Gobiidae)
TOSHIYUKI SUZUKI
1 Kawanishi-midoridai Senior High School,
1–8 Kouyoudai, Kawanishi, Hyogo 666–0115, Japan
KORECHIKA YANO
Dive Service Yano, 537 Uehara, Taketomi-cho,
Okinawa 907-1541, Japan
HIROSHI SENOU
Kanagawa Prefectural Museum of Natural History,
499 Iryuda, Odawara, Kanagawa 250–0031, Japan
Systematik: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
The term "reef safe" is often used in marine aquaristics, especially when buying a new species people often ask if the new animal is "reef safe".
What exactly does reef safe mean?
To answer this question, you can ask target-oriented questions and inquire in forums, clubs, dealers and with aquarist friends:
- Are there already experiences and keeping reports that assure that the new animal can live in other suitably equipped aquariums without ever having caused problems?
- Is there any experience of invertebrates (crustaceans, hermits, mussels, snails) or corals being attacked by other inhabitants such as fish of the same or a different species?
- Is any information known or expected about a possible change in dietary habits, e.g., from a plant-based diet to a meat-based diet?
- Do the desired animals leave the reef structure "alone", do they constantly change it (boring starfish, digger gobies, parrotfish, triggerfish) and thus disturb or displace other co-inhabitants?
- do new animals tend to get diseases repeatedly and very quickly and can they be treated?
- Do known peaceful animals change their character in the course of their life and become aggressive?
- Can the death of a new animal possibly even lead to the death of the rest of the stock through poisoning (possible with some species of sea cucumbers)?
- Last but not least the keeper of the animals has to be included in the "reef safety", there are actively poisonous, passively poisonous animals, animals that have dangerous biting or stinging weapons, animals with extremely strong nettle poisons, these have to be (er)known and a plan of action should have been made in advance in case of an attack on the aquarist (e.g. telephone numbers of the poison control center, the treating doctor, the tropical institute etc.).
If all questions are evaluated positively in the sense of the animal(s) and the keeper, then one can assume a "reef safety".
The new species Trimma yoshinoi is described from five specimens, 18.4–21.4 mm SL, collected in 36 m depth at Iriomote-jima Island, Ryukyu Islands, Japan.
Trimma is an Indo-Pacific gobiid fish genus, comprising cryptic, tiny (seldom exceeding 30 mm SL), colorful,
tropical species found on coral and rocky reefs, usually at depths shallower than 50 m (Winterbottom & Hoese
2015). According to Winterbottom (2011), Trimma can be recognized by having the following combination of
characters: lack of cephalic sensory canal pores; much reduced cephalic sensory papillae pattern; wide gill opening
extending to below the vertical limb of the preopercle or anterior to this; lack of bony spicules on the outer gill
rakers of the first gill arch; fewer than 12 dorsal and anal-fin segmented rays; and a fifth pelvic fin ray that is equal
to or more than 40% the length of the fourth pelvic-fin ray.
Systematik: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Trimma yoshinoi, a new gobiid fish from Japan (Perciformes: Gobiidae)
TOSHIYUKI SUZUKI
1 Kawanishi-midoridai Senior High School,
1–8 Kouyoudai, Kawanishi, Hyogo 666–0115, Japan
KORECHIKA YANO
Dive Service Yano, 537 Uehara, Taketomi-cho,
Okinawa 907-1541, Japan
HIROSHI SENOU
Kanagawa Prefectural Museum of Natural History,
499 Iryuda, Odawara, Kanagawa 250–0031, Japan
Systematik: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
The term "reef safe" is often used in marine aquaristics, especially when buying a new species people often ask if the new animal is "reef safe".
What exactly does reef safe mean?
To answer this question, you can ask target-oriented questions and inquire in forums, clubs, dealers and with aquarist friends:
- Are there already experiences and keeping reports that assure that the new animal can live in other suitably equipped aquariums without ever having caused problems?
- Is there any experience of invertebrates (crustaceans, hermits, mussels, snails) or corals being attacked by other inhabitants such as fish of the same or a different species?
- Is any information known or expected about a possible change in dietary habits, e.g., from a plant-based diet to a meat-based diet?
- Do the desired animals leave the reef structure "alone", do they constantly change it (boring starfish, digger gobies, parrotfish, triggerfish) and thus disturb or displace other co-inhabitants?
- do new animals tend to get diseases repeatedly and very quickly and can they be treated?
- Do known peaceful animals change their character in the course of their life and become aggressive?
- Can the death of a new animal possibly even lead to the death of the rest of the stock through poisoning (possible with some species of sea cucumbers)?
- Last but not least the keeper of the animals has to be included in the "reef safety", there are actively poisonous, passively poisonous animals, animals that have dangerous biting or stinging weapons, animals with extremely strong nettle poisons, these have to be (er)known and a plan of action should have been made in advance in case of an attack on the aquarist (e.g. telephone numbers of the poison control center, the treating doctor, the tropical institute etc.).
If all questions are evaluated positively in the sense of the animal(s) and the keeper, then one can assume a "reef safety".






Korechika Yano, Japan